Exhaust gas sensor

Inactive Publication Date: 2015-01-29
ROBERT BOSCH GMBH
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0036]To achieve comparatively high seal-tightness of the housing, it particularly may be that the connecting cable, the stopper, and the housing are connected to one another in an integrally joined manner, i.e., in particular an integral bond being established between the housing and the stopper,

Problems solved by technology

However, if the exhaust gas sensor is exposed to excessively high temperatures over an impermissibly long period of time, the material becomes brittle in particular due to outward diffusion of softening components from the fluoroelastomer and/or due to other mechanisms wh

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Exhaust gas sensor
  • Exhaust gas sensor
  • Exhaust gas sensor

Examples

Experimental program
Comparison scheme
Effect test

Example

[0062]The second exemplary embodiment differs from the first exemplary embodiment in that seal 26 is configured not as a layer on the inner contour of base body 24 over the entire surface, but, rather, as a sealing ring 28 which is situated on the inner contour of the base body and which only partially covers same in the longitudinal extension. Sealing ring 28 has a length (in the longitudinal direction of through channel 25) of 1 mm and a thickness (in the radial direction) of 150 μm or 250 μm.

[0063]Furthermore, the second exemplary embodiment differs from the first exemplary embodiment in that outer seal 36 is configured not as a radially outer layer over the entire surface of base body 24, but, rather, as an outer sealing ring 38 which is radially outwardly situated on base body 24 and which only partially covers the outer surface of base body 24 in the longitudinal extension. Outer sealing ring 38 has a length (in the longitudinal direction of base body 24) of 3 mm and a thickne...

Example

[0072]In contrast to the third exemplary embodiment, it is provided that insulation 19 of connecting cable 21 and seal 26 are not configured as parts which are different from one another; instead, seal 26 at the same time takes on the function of insulation 19 of electrical conductor 20, and faces same, in particular directly. In the present example, seal 26 and insulation 19 together with electrical conductor 20 are led out of stopper 1 in particular on two sides or on one side, and insulate electrical conductor 20 of connecting cable 21 also outside of stopper 1, for example up to a portion of a plug-in connection (not shown), for example a plug, which is connected to connecting cable 21 on the side of connecting cable 21 opposite from stopper 1, and which is connectable to, in particular pluggable into, a complementary part of the plug-in connection, a socket, for example, which is part of a control unit.

[0073]In the present example, insulation 19, which at the same time forms in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Login to view more

Abstract

A stopper is described for sealing a housing of an exhaust gas sensor, in which the stopper has a base body which contains a fluoroelastomer, and in which the stopper has at least one through channel for leading through a connecting cable. A seal is situated, at least in places, between the base body of the stopper and the through channel. The seal contains at least one thermoplastically processable fluoropolymer-containing material having a melting point or melting range between 170° C. and 320° C.

Description

FIELD OF THE INVENTION[0001]The present invention is directed to an exhaust gas sensor. Exhaust gas sensors of this type include a housing in which a sensor element which, for example, is ceramic and operates electrochemically is situated. Exhaust gas sensors of this type also include a stopper which seals off the housing, and through which at least one connecting cable is led out of the housing or into the housing.BACKGROUND INFORMATION[0002]This stopper and the cooperation of the stopper with the connecting cable must meet the requirement for a high level of seal-tightness. Due to the high level of seal-tightness, the penetration of harmful, for example corrosion-inducing, liquids and gases into the interior of the exhaust gas sensor may be effectively and permanently prevented. To achieve the seal-tightness it is necessary in particular for the stopper to have sufficient elasticity. On the other hand, as a result of the high exhaust gas temperatures to which the exhaust gas senso...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N27/407F16J15/02
CPCF16J15/022G01N27/4078Y10T29/49826
Inventor SOYEZ, GUIDOSTANGLMEIER, FRANKSCHNEIDER, JENSREIHLEN, ECKART
Owner ROBERT BOSCH GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap